TW89SCm6oXHUtqjL9XPKePbxTrjQjif71W

[arashebadi38]

// SPDX-License-Identifier: MIT
pragma solidity ^0.5.10;

interface ITRC20 {
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
}

contract TronStake615 {
ITRC20 public token;

uint256 public rewardPercent = 6150; // 61.5% * 100
uint256 public stakingDuration = 30 days;

struct Stake {
    uint256 amount;
    uint256 startTime;
    bool claimed;
}

mapping(address => Stake) public stakes;

constructor(address _tokenAddress) public {
    token = ITRC20(_tokenAddress);
}

function stake(uint256 amount) public {
    require(stakes[msg.sender].amount == 0, "Already staking");
    require(amount > 0, "Invalid amount");

    require(token.transferFrom(msg.sender, address(this), amount), "Transfer failed");
    stakes[msg.sender] = Stake(amount, now, false);
}

function withdraw() public {
    Stake storage s = stakes[msg.sender];
    require(!s.claimed, "Already withdrawn");
    require(now >= s.startTime + stakingDuration, "Staking period not finished");

    uint256 reward = s.amount * rewardPercent / 10000; // ضریب 100 * درصد 61.5 = 6150 تقسیم بر 10000
    s.claimed = true;

    require(token.transfer(msg.sender, s.amount + reward), "Transfer failed");
}

function emergencyWithdraw() public {
    Stake storage s = stakes[msg.sender];
    require(!s.claimed, "Already withdrawn");

    s.claimed = true;
    require(token.transfer(msg.sender, s.amount), "Transfer failed");
}

}